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Study of $^7$Be+d reactions for Standard Big Bang Nucleosynthesis

Angulo, C. / Casarejos, E. / Coc, A. / Davinson, T. / Achouri, N.L. / Cortina-Gil, D. / Couder, M. / Figuera, P. / Fulton, B. / Kiener, J. / Leleux, P. / Mukha, I. / Murphy, A.S. / Ninane, A. / Orr, N.A. / Tatischeff, V. / Vanderbista, F. - 2004
The recent WMAP results tightly constrain the baryon density in the universe, which in turn constrains the light element abundance predicted in Standard Big Bang Nucleosynthesis (SBBN). There is a discrepance in the $^7$Li abundance which cannot be explained by uncertainties in the main reactions included in the SBBN. Up to now, the influence of the reaction $^7Be(d,p)2\alpha$ has been neglected. We have investigated this reaction at SBBN energies using a radioactive $^7$Be beam and a $(CD_2)_n$ self-supporting target at the CYCLONE RIB facility at Louvain-la-Neuve. The experimental method is briefly described. Preliminary results and consequences for primordial nucleosynthesis are discussed.

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